The Sui blockchain team has revealed plans to integrate two post-quantum signature schemes that have received NIST approval. The first, ML-DSA-65 (FIPS 204), will function as the primary protocol for standard accounts. The second, SLH-DSA-SHA2-128s (FIPS 205), will be employed in Move smart contracts, particularly for managing large asset storage.
This upgrade will be optional for users, allowing them to derive new keys from their existing seed phrases. This means current accounts can switch to a post-quantum key without altering their address or assets. The team aims to roll out quantum-resistant storage on the main network by late 2026, with ML-DSA-65 support expected to be available on the testnet around the same timeline. Additionally, native account authentication on the mainnet is projected for the first quarter of 2027.
